Defensive publication



DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 O.G. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Oflice makes no assertion as to the novelty oi the disclosed subject matter.

PUBLISHED MARCH 10, 1970 T872,003 pound. The nitrogen atoms contained in the polymer LIGHT-SENSITIVE POLYMERS backbone may or may not be quaternized. Examples of Douglas Bfirdell, Jack Williams, and Tlmmas such polymers are those containing recurring units havs(lliaakso, all Kodak Park, Rochester, NY. ing the following Structures:

Filed Sept. 30, 1969, Ser. No. 862,503

03 1/63 O=(i-CH=CHCH=CH-OOCH2$HCH2CH US. Cl. 96115 No Drawing. 16 Pages Specification I (CHmCH: Light-sensitive polymers containing a plurality of qua- CH S l ternized and/or quaternizable nitrogen atoms in the poly- 2 met backbone are disclosed. The polymers are of two types. Type 1 polymers are formed by the quaterniza- 2- tion with a difunctional quaternizing agent, such as a xylene dibromide, of a bis-tertiary amine containing chromophoric groups and which have conjugation extending 1191161120111 throughout the molecule from one nitrogen atom to the Hmgfia other. Examples of bis-tertiary amines which may be used include those having the formulae and Polymers of Type 2 are obtained by esterifying a poly- The polymers of both Type 1 and Type 2 are useful in mer containing quaternizable nitrogen atoms and reacphotomechamcal reproductlon processes. Their use 1n the tive hydroxyl groups with an acidic light-sensitive compreparation of hthographic plates 1s dlsclosed. 

